Demountable rim



Patented Nov.V 16,

Trias eATeNTf' V SAMUEL s.' AMICK AND HERBERT L. MIBPHY, or nsrnn'ro, oALrronivrA. j

Dniviouivraenn nim.

Appiicatioii flied April 22,A i925- serialY N0. sacra i able rim which is secured tothe felly of ai.

wheel, in such manner that the use of clips and nuts is obviated.

Other objects and advantages will'be ap-v parent from the following description when taken in connection with the accompanying drawing.

In the drawing Figure 1 is a side elevation of a portion of a Wheel equipped with the improved deinountable rim.

Figure 2 is an elevational view at right angles to that of Figure 1, but with the rim removed. i

Figure 3 is an enlarged fragmentary sectional view on the line 3-3 of Figure 2,v

showing the locking cam of the rim.

Figure et is an enlarged vertical-sectional view von the line 4:-1 of Figure V1, showing one of the cams in locking position. y Figure 5 1s a fragmentary plan view of l the inner face of the demountable rim, showing the means with which the locking cams engage.

Referring particularly to the, accompanying drawings, represents the felly ofthe wheel, which has the inner vertical flange 1.1, and the outer rim supporting disk l2,

' which latter is of smaller diameter than the flange 11, whereby to lbe properly,` received in the deniountable rim 13, and to project beyond the periphery of thel felly.

Secured to the opposite side facesof thel felly 10 are the radially extending apertured ears 14, the ears fof one face of the felly alining, transverselyof the felly, with corresponding ears ofthe opposite face, and slidably and rotatably receiving therein'the opposite ends of the shafts ,15. Thefouter ends of the shafts extend through openings 16 in the disk 1.2, and are provided, ei;- teriorly ofv said disk, with square portions 17, for engagement by a suitable key. On the intermediate portion of each of the shafts 15, is formed a spiral cam rib 18, and

Vopposite. the intermediate portion of each rib 18y is a radially extending lug 19. Encircling each shaft, between the ears 14, and thev cain-18 and lug 19,-respectively, are the coil'springs-QOxand 20', whichserve tol-lend `frictio'nitgo the shafts, vwhereby said shafts will remain at any point in their rotation. lt will benotedthat the spring 20 is longer than the springf20,j.and that-.said spring normally urges t-he shaftl'toward the left, as viewedin Figures 2 and t, so that the the lug 25, to be later described. Projecting from the peripheral face of the .felly are the lugs 21 and 22, the former of whichis arranged to be engaged by one end of a cam `cani rib will be frictionally engaged with" rib 18, while the other is arranged tol be ento limit the rotation ofthe shaft in the other, j l direction.

. The rim 13 is provided with the marginal rtire engaging flanges, on its outer face, andon its innerface adjacent one edge thereof areforined the inwardly directedlugs 23, which are arranged to pass 'through the notches 24, formed in the periphery `of the Adisk 12, in the application or removal of the rim. Formed on the inner face of the rim 13, adjacent the other edge thereof, are the lugs 25, and on the innerl face ofeach of these lugs there is formed a recess 26, into which the apex of the cam rib 18 is arrangedv t0 engage, upon rotation of a shaft 15, in Y one direction, and which serves to properly and securely hold the rim. 13 on the felly. i

lt will be noted that the cam ribs 18 eX- tend partly around theV shaftsl so that when the shafts are rotated in one direction, vby a lthe lugs 19, the unribbedportions of the shafts will lie oppositeisaid recesses, whereby the rim may be readily slipped from the I,

wheel. i

It will further be noted thatthe cam ribs engage bet-Ween the lugs and the inner faces of the lugs 23, thus more securely holding the rim 13 against movement in either direction transversely of the felly of the wheel. ltwill benoted that the ends of the los cani rib 18 are spaced a sufficient distance apart t0 pcrinit straddling Vof the lug 25, When the riin 13 is slipped onto the felly.

To reinove the rini 13, it is only necessary to turn the shafts luntil the cani ribs are out of the recesses 26, when the riin may be quickly slipped olf. After the rirn has been replaced` on the Wheel, the shafts are turned in the opposite direction to lock the riin in place.

That is claimed is:v

A Wheel construction comprising a felly having a peripheral flange and a disk of Vlesser diameter thanthe flange and spaced outwardly therefrom, a transverse ring adjacent the peripheries of said fiangeV and disk, radially extending vlugs on the peripheral face of the ring, the disk and flange having transversely alined openings, transyerse shafts supported in said openings for rotation and reciprocation therein and each having a spiral cani rib thereon,.res1l1ent Vmeans on each of the shafts on opposite sides of the cani for urging the shafts longitudinally in said openings, a riin disposed outwardly of the shafts, and a plurality of recessed lugs on the inner face of the rim into which said cani rib is arranged to engage to maintain the riin on the Wheel, said shafts being arranged to stop in one direction by Contact of the rib with one kof the first lugs, and a lug on the shaft for engagement with the other of said rim lugs. A

` In testimony whereof, We afliX'our signatnres.

SAMUEL S. AMICK. HERBERT L. MURPHY. 

